As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3385 - ON CLIMB-OUT FROM YXU, THE GEAR DOOR POSITION WARNING LIGHT ILLUMINATED WHEN RETRACTING THE GEAR. THE LIGHT ALSO ILLUMINATED WHEN THE GEAR WAS EXTENDED ON APPROACH TO DTW. MAINTENANCE SERVICED THE RIGHT MAIN LANDING GEAR STRUT. ALL CHECKS WERE SATISFACTORY. (M)